I'm working on the "Introduction to radioactivity and half-life experiment". It's harder than I thought. Any references that you know of that might make this easier to understand?

This reference may be useful.

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You may have some difficulty finding a radioactive source with a half-life short enough to measure. Most are used in nuclear medicine, with carefully limited distributiuon.

My son once did a science fair experient like yours, using wadded-up Coleman lantern mantles as a source. They contain radioactive thorium. The half life was too long to measure, so he tried to verify the inverse square law. He used a Heathkit Geiger counter that I once made and still have. Background radiation complicated the experiment.

He did not get an A, was not happy about that, and I have avoided giving Science Fair advice ever since. If you have some specific questions, we have several teachers here who will be glad to help.

Absolutely! The topic of radioactivity and half-life can be complex but there are several resources available to help you better grasp the concepts. Here are some references that you might find useful:

1. Books: There are several books that provide a comprehensive introduction to radioactivity and half-life. Some recommended titles include:
- "Radioactivity: Introduction and History" by Michael F. L'Annunziata
- "Nuclear Science: A Guide to the Nuclear Science Wall Chart" by Richard E. Lingenfelter
- "Introduction to Radiological Physics and Radiation Dosimetry" by Frank H. Attix

2. Online lectures: Universities often offer online lecture series that cover various topics related to radioactivity and nuclear physics. Websites like MIT OpenCourseWare, Coursera, and Khan Academy provide free access to online courses and lecture videos. Searching for specific keywords like "radioactivity" or "nuclear physics" on these platforms can provide you with relevant resources.

3. Educational websites: Websites specifically designed for educational purposes can also offer helpful explanations and interactive learning experiences. Some notable examples include:
- Khan Academy's section on nuclear chemistry and radioactivity
- HyperPhysics website, hosted by the Department of Physics and Astronomy at Georgia State University, which provides an extensive collection of educational materials on various physics topics, including radioactivity and half-life.

4. YouTube: Video tutorials on platforms like YouTube can be an excellent visual aid for understanding complex topics. There are numerous channels dedicated to explaining radioactivity and half-life experiment in a simplified manner. A few recommended channels include:
- CrashCourse Physics
- The Organic Chemistry Tutor
- Khan Academy

Remember, learning any complex topic takes time and effort. It's essential to approach it with patience, review concepts multiple times if necessary, and seek clarification when needed.